- Lady A
- original song (as Lady Antebellum)
- Yolanda Adams
- original song
- Sylvia Addison
- orchestra manager
- Tommy Andrews
- tenor sax/flute/clarinet
- Sara Bareilles
- original song
- David Bowie
- song by
- Sarah Chapman
- viola
- Randy Cohen
- keyboard programmer
- Doug Cohn
- senior vice president: music: Nickelodeon
- Jonathan Coulton
- additional lyrics / original song
- Mark Cumberland
- copyist
- Huw Davies
- guitar 2
- Derek Drymon
- original song
- Alex Ebert
- original song
- Brian Eno
- song by
- The Flaming Lips
- original song
- Louisa Green
- keyboard/accordian
- Emily Grishman
- music preparation
- Sam Hall
- guitar / keyboard
- Timothy Hanson
- associate music director
- Domani Harris
- original song (as Domani)
- Tip 'T.I.' Harris
- original song (as T.I.)
- Mark Harrison
- original song
- Marianne Haynes
- violin 1
- Jonathan Hill
- violin 1
- Stephen Hillenburg
- original song
- Rob Hyman
- original song
- Bryony James
- cello
- Mike Kearsey
- trombone
- Tom Kenny
- song by
- Ian King
- bass guitar/upright bass
- Tom Kitt
- additional music / arranger / orchestrator
- David Larkin
- violin 2
- Cyndi Lauper
- original song
- John Legend
- original song
- Simon Marsh
- alto sax/flute/clarinet
- Julie McBride
- conductor / keyboard / music supervisor
- Andy McGlasson
- drums
- Pablo Mendelssohn
- trumpet/flugelhorn
- Andy Paley
- song by
- Panic! at the Disco
- original song
- Joe Perry
- original song
- Plain White T's
- original song
- Darwin Quinn
- original song (as Lil' C)
- Justin Quinn
- guitar 1
- Helen Sanders-Hewitt
- viola
- Blaise Smith
- original song
- Sam Starobin
- keyboard programmer
- They Might Be Giants
- original song
- Steven Tyler
- original song